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• FFMPEG return No such file or directory when running by cronJob

  23 décembre 2015, par salina

  I’m trying to convert a video to MP4 .The problem is if I run the page manually it convert the video but If cron job runs the page to convert the video it returns this :

  ffmpeg version 0.11 Copyright (c) 2000-2012 the FFmpeg developers   built on Nov 19 2015 08:42:01 with gcc 4.4.7 20120313 (Red Hat 4.4.7-16)   configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-shared --enable-libmp3lame --enable-libx264 --enable-libfaac --enable-libvpx --enable-libvorbis --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencore-amrnb --enable-libtheora   libavutil      51. 54.100 / 51. 54.100   libavcodec     54. 23.100 / 54. 23.100   libavformat    54.  6.100 / 54.  6.100   libavdevice    54.  0.100 / 54.  0.100   libavfilter     2. 77.100 /  2. 77.100   libswscale      2.  1.100 /  2.  1.100   libswresample   0. 15.100 /  0. 15.100   libpostproc    52.  0.100 / 52.  0.100 vids_temp/147770505972365.mp4: No such file or directory

  this is the line I use for converting :

  $command = "$this->ffmpegAddress -i $this->input -y -c:v libx264 $outPut 2>&1";

  Why does it return : vids_temp/147770505972365.mp4: No such file or directory if I run it by cronjob ?

  Thanks

• Using ffmpeg via Popen running extremely slow in python

  30 décembre 2016, par law

  I’m writing a script that batch processes video in python. Basically, it takes a .dv file turns it into .avi and the captures only the audio in .wav format. Command line use of ffmpeg on a mac terminal executes on the order of a second or so. But when I use Popen to run the same code from within python, each file takes multiple minutes. Not sure why...I think I may be using Popen inappropriately. Code listed below :

  command1 = ['ffmpeg', '-i', input_name, '-y', '-vcodec', 'h264', 'temp.avi']
  
  command2 = ['ffmpeg', '-i', 'temp.avi', '-ab', '160k', '-ac', '44100', '-vn', outfile]
  
  
  
  proc1 = subprocess.Popen(command1, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
  
  proc1.communicate()
  
  print "Converted to avi"
  
  
  
  proc2 = subprocess.Popen(command2, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
  
  proc2.communicate()
  
  print "Wavefile extracted"

• running ffmpeg with nvenc inside nvidia docker

  6 décembre 2020, par Gofrane Haj Ahmed

  I installed Nvidia Video Codec SDK 8.2 + ffmpeg inside a docker container by using nvidia-docker but when I run this

  



  ffmpeg -f rawvideo -s:v 1920x1080 -r 30 -pix_fmt yuv420p -i HeavyHand_1080p.yuv -c:v h264_nvenc -preset slow -cq 10 -bf 2 -g 150 output.mp4


  



  I got this error

  



  


  Cannot load libnvidia-encode.so.1

  
 


  The minimum required Nvidia driver for nvenc is 390.25 or newer
 Error initializing output stream 0:0 — Error while opening encoder
 for output stream #0:0 - maybe incorrect parameters such as bit_rate,
 rate, width or height

  


  



  Otherwise nvidia-smi displays this

  



  

  



  this gpu used is GeForce 1050 Ti and the cuda version is 9.0